Improved saw-set



j UNITED STATES PATENT OFFICE.

OLIVER NEWTON', OF NIATERTOVN, NEW YORK, ASSIGNOR rlO WILLIAM NASH, OFSAME PLACE. A

IMPROVED SAW-SET.

Specification forming part of Letters Patent No. 39,323, dated July 21,1863.

To all whom it may concern.-

Be it known that I, OLIVER NEWTON, of

Vatertown, in the county of Jefferson and State of New York, haveinvented a new and Improved Saw-Set; and I do hereby declare that thefollowing is a full, clear, and exact description of the same, referencebeing had to the accompanying drawings, making a part of thisspecification, in which- Figure 1 is an edge view of my invention 5 Fig.2, a view of the same.

Similar letters of reference indicate corresponding parts in the twoiigures.

The object of this invention is to obtain a saw-set of simpleconstruction which may be adapted for setting the teeth of either largeor small saws, and at the same time have a powerful purchase, so as tobe capable of being readily operated, and enable even unskillful handsto set a saw in a perfect manner.

To enable those skilled in the art to fully understand and construct myinvention, I will proceed to describe it.

A represents what may be termed a frame,7 the same being composed of astraight portion, a, having an outer part, b, which has an obliqueposition relatively with c, and provided with two ears or projections, cc', which are at right angles to c, as shown clearly in Fig. 2. Theframe A terminates in a handle, B, of curved form, as shown in Fig. 2.

C is a handle, which performs the function of a lever and has itsfulcrum-pin d passing through the projection c, the handle C beingfitted in said projection, which is slotted longitudinally to receiveit. The inner end ofthe handle C is curvedv and rounded, as shown at d',in Fig. 2.

D is a Short lever, the fulcrum-pin e of which passes through theprojection c". The inner end of this lever D is scalloped out, as shownat f, and this concave recess fis made to bear against the rounded innerend, d', of the handle C by means of a spring, g, which is attached tothe frame A and made to bear against the inner side of the lever D infront of its fulcrum-pin c. The outer end of the lever D is curved inhook form, as shown at h, said hook extending toward the oblique end bof the frame A.

E is a set-screw which passes through the handle or lever C, and F is aset-screw which passes through the oblique part b of the frame A, and atsuch a point as to admit of the end h of the lever D coming in contactwith it when the handles B C are pressed toward each other as far asthey are permitted by the set-screws E F.

G represents a die, which is fitted by a dovetail connection, i, in theframe A at the junction of the part b with d, and His a die which isfitted similarly in the lever D, and has itsr front edge beveled in Vform. The face of the die G is slightly inclined toward the part a ofthe frame A, vfrom the front of said die toward its back end.

I is a gage, which is composed of a bent plate, one part, i, of whichbears against the the outer edge of the frame A, and has an oblong slot,j, made longitudinally in it, through which a sit-screw, 7c, passes intothe frame A, said setscrew passing through a washer, l, which bearsagainst the part t' of the gage. The other part, m, of the gage isslotted, so that the part aJ of the frame may iit into it, an equal partof m being at each side of a.

The frame, handles, and lever may be of malleable cast-iron. The diesshould be of steel, properly tempered.

The saw-blade, when the implement is in use, rests or bears against theset-screw F, the tooth to be acted upon being between the two dies, withthe points of the adjoining teeth in contact with gage I, the diesgiving the set to the tooth when the handles B C are pressed together.The implement is shoved along from tooth to tooth, the degree of setbeing governed by adjusting the set-screws E F. By the arrangement ofthe lever D and handle G, as shown, a powerful purchase is obtained. Thedies G H grasp the teeth at their base, the points being untouched inconsequence of the beveled or inclined surface of the die G. Theset-screw F prevents the teeth being broken by an unskillful hand, acontingency of frequent occurrence in using the saw-sets in general use.The gage I is adj usted to suit the size or length of the teeth andinsure the dies acting upon them at their bases.

Having thus described my invention, what gage. I, spring g, set-screws EF, and dies G ][?Claim as new, and desire to secure by Letters H, allarranged substantially :Ls set forth.

atout is- A saJW-set composed of a frame, A, having OLIVER NEWTON' astraight portion, a, an oblique portion, b, n Vitnesses: handle, B, :itone end, and two projections, c N. W'ILEY, c, and also composed of ahandle, C, lever D, T. H. BUTLER.

